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Sweat glands were first separated into kinds by the French histologist Louis-Antoine Ranvier, who separated them in 1887 regarding their type of secretion into holocrine glands (sebaceous glands) and the merocrine glands (sweat glands), the latter were then in 1917 divided into apocrine and eccrine sweat glands. In 1987, apoeccrine glands were ...
Holocrine gland secretion is the most damaging (to the cell itself and not to the host which begot the cell) type of secretion, with merocrine secretion being the least damaging and apocrine secretion falling in between. Examples of holocrine glands include the sebaceous glands of the skin [2] [3] and the meibomian glands of the eyelid.
Merocrine is the most common manner of secretion. The gland releases its product and no part of the gland is lost or damaged (compare holocrine and apocrine). The term eccrine is specifically used to designate merocrine secretions from sweat glands (eccrine sweat glands), [1] although the term merocrine is often used interchangeably. [2] [3]
Examples are sweat glands of arm pits, pubic region, skin around anus, lips and nipples; mammary glands, etc. Holocrine – the entire cell disintegrates to excrete its substance; for example, sebaceous glands of the skin and nose, meibomian gland, zeis gland, etc.
sweat gland. Skin secretions are those substances and materials that are secreted by the skin and the external mucous membranes. Some skin secretions are associated with body hair. Skin secretions originate from glands that in dermal layer of the epidermis. Sweat, a physiological aid to body temperature regulation, is secreted by eccrine glands.
Holocrine glands – the entire cell disintegrates to secrete its substances. (e.g. sebaceous glands: meibomian and zeis glands) Exocrine glands can further be categorized by their product: Serous glands secrete a watery, often protein-rich, fluid-like product, e.g. sweat glands.
These sweat glands are in part activated by compounds called catecholamines, which are secreted in times of stress. From a dermatological standpoint, body odor isn’t an unhealthy thing, either ...
An apocrine sweat gland (/ ˈ æ p ə k r ə n,-ˌ k r aɪ n,-ˌ k r iː n /; from Greek apo 'away' and krinein 'to separate') [5] [6] is composed of a coiled secretory portion located at the junction of the dermis and subcutaneous fat, from which a straight portion inserts and secretes into the infundibular portion of the hair follicle. [7]